I am trying to just render an ajax request to display the values at a site when the user selects a site, I have this: <%= text_field_with_auto_complete :site, :name, :with => "''ci='' + element.value ", :after_update_element => remote_function( :url => { :controller => ''sites'', :action => ''updatesearch'' } ) %> It is not doing anything when I select a value. Any ideas?